/**
 * Screenshot post-processing - Scale and color reduction
 *
 * Reduces screenshot file size for LLM context by:
 * 1. Scaling down (e.g., 0.5 = 50%)
 * 2. Reducing colors (2/4/16/256 instead of full 24-bit)
 *
 * Platform-specific implementations:
 * - Windows: PowerShell + System.Drawing
 * - macOS: sips + ImageMagick (if available)
 * - Linux: ImageMagick convert
 *
 * v1.13.0
 */
import type { ScreenshotColors } from './types.js';
export interface PostProcessOptions {
    scale?: number;
    colors?: ScreenshotColors;
}
export interface PostProcessResult {
    original_size: number;
    optimized_size: number;
}
/**
 * Post-process a screenshot file in-place.
 * Returns original and optimized file sizes.
 */
export declare function postProcess(filePath: string, options: PostProcessOptions): PostProcessResult;
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